Table 1.
General characteristics of the study population.
| Variables | Serum magnesium levels (mmol/L) | P for trend | ||
|---|---|---|---|---|
| Tertile 1 Mg < 0.86 |
Tertile 2 0.86 ≤ Mg < 0.92 |
Tertile 3 Mg ≥ 0.92 |
||
| N | 607 | 607 | 615 | |
| Age (year) | 61.11 ± 10.01 | 61.53 ± 9.18 | 61.98 ± 9.98 | 0.10 |
| Female (%) | 62.11 | 57.00 | 53.82 | 0.003 |
| BMI (kg/m2) | 26.31 ± 3.50 | 26.24 ± 3.40 | 26.08 ± 3.50 | 0.24 |
| Current smoking (%) | 19.28 | 20.59 | 19.84 | 0.81 |
| Current drinking (%) | 9.72 | 10.71 | 9.92 | 0.91 |
| Antidiabetic drugs (%) | 47.12 | 40.53 | 35.45 | <0.0001 |
| Antihypertensive drugs (%) | 41.19 | 41.19 | 46.18 | 0.08 |
| FPG (mmol/L) | 8.34 ± 2.97 | 7.35 ± 2.18 | 7.02 ± 1.89 | <0.0001 |
| 2h-PG (mmol/L) | 16.60 ± 5.86 | 15.35 ± 4.66 | 14.24 ± 4.33 | <0.0001 |
| HbA1c (%) | 6.9 (6.2–8.3) | 6.6 (6.0–7.4) | 6.3 (5.8–7.0) | <0.0001 |
| HOMA-IR | 2.93 (1.91–4.92) | 2.86 (1.77–4.35) | 2.67 (1.63–4.12) | 0.002 |
| SBP (mmHg) | 149.60 ± 19.95 | 149.53 ± 20.23 | 148.09 ± 18.57 | 0.18 |
| DBP (mmHg) | 84.40 ± 10.30 | 83.92 ± 10.58 | 83.64 ± 9.90 | 0.20 |
| LDL-c (mmol/L) | 3.23 ± 0.94 | 3.31 ± 0.92 | 3.34 ± 0.91 | 0.03 |
| HDL-c (mmol/L) | 1.28 ± 0.30 | 1.27 ± 0.31 | 1.26 ± 0.30 | 0.20 |
| TC (mmol/L) | 5.44 ± 1.12 | 5.49 ± 1.09 | 5.58 ± 1.08 | 0.02 |
| TG (mmol/L) | 1.60 (1.19–2.37) | 1.67 (1.19–2.23) | 1.74 (1.22–2.44) | 0.11 |
| UACR (mg/g) | 7.68 (3.94–17.94) | 6.15 (3.43–13.58) | 5.74 (3.00–12.72) | <0.0001 |
| Serum creatinine (umol/L) | 58.85 ± 14.95 | 61.15 ± 14.37 | 64.01 ± 16.98 | <0.0001 |
| eGFR (mL/min per 1.73 m2) | 114.90 ± 27.58 | 110.16 ± 23.05 | 105.85 ± 22.73 | <0.0001 |
Data are means ± SD, medians (interquartile range), or percentages of subjects.